package com.xls.boxlibrary.utils;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.util.Base64;
import com.xls.boxlibrary.Consts.StateConsts;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Map;

/**
 * 首选项存储
 */
public class SPUtils {
    /**
     * 保存在手机里面的文件名
     */
    public static final String FILE_NAME = "sp_installation_assistant";

    /**
     * 保存数据的方法，我们需要拿到保存数据的具体类型，然后根据类型调用不同的保存方法
     *
     * @param context
     * @param key
     * @param object
     */
    public static void put(Context context, String key, Object object) {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();
        if (object instanceof String) {
            editor.putString(key, (String) object);
        } else if (object instanceof Integer) {
            editor.putInt(key, (Integer) object);
        } else if (object instanceof Boolean) {
            editor.putBoolean(key, (Boolean) object);
        } else if (object instanceof Float) {
            editor.putFloat(key, (Float) object);
        } else if (object instanceof Long) {
            editor.putLong(key, (Long) object);
        } else {
            if (object instanceof Serializable) {// obj必须实现Serializable接口，否则会出问题
                try {
                    ByteArrayOutputStream baos = new ByteArrayOutputStream();
                    ObjectOutputStream oos = new ObjectOutputStream(baos);
                    oos.writeObject(object);
                    String string64 = new String(Base64.encode(baos.toByteArray(),0));
                    editor.putString(key, string64).apply();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } else {
                throw new IllegalArgumentException("the obj must implement Serializble");
            }
        }
        SharedPreferencesCompat.apply(editor);
    }

    /**
     * 得到保存数据的方法，我们根据默认值得到保存的数据的具体类型，然后调用相对于的方法获取值
     *
     * @param context
     * @param key
     * @param defaultObject
     * @return
     */
    public static Object get(Context context, String key, Object defaultObject) {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        if (defaultObject instanceof String) {
            return sp.getString(key, (String) defaultObject);
        } else if (defaultObject instanceof Integer) {
            return sp.getInt(key, (Integer) defaultObject);
        } else if (defaultObject instanceof Boolean) {
            return sp.getBoolean(key, (Boolean) defaultObject);
        } else if (defaultObject instanceof Float) {
            return sp.getFloat(key, (Float) defaultObject);
        } else if (defaultObject instanceof Long) {
            return sp.getLong(key, (Long) defaultObject);
        }else {
            Object obj = null;
            try {
                String base64 = sp.getString(key, "");
                if (base64.equals("")) {
                    return null;
                }
                byte[] base64Bytes = Base64.decode(base64.getBytes(), 1);
                ByteArrayInputStream bais = new ByteArrayInputStream(base64Bytes);
                ObjectInputStream ois = new ObjectInputStream(bais);
                obj = ois.readObject();
                return obj;
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return null;
    }

    /**
     * 移除某个key值已经对应的值
     *
     * @param context
     * @param key
     */
    public static void remove(Context context, String key) {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();
        editor.remove(key);
        SharedPreferencesCompat.apply(editor);
    }

    /**
     * 清除所有数据
     *
     * @param context
     */
    public static void clear(Context context) {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();
        editor.clear();
        SharedPreferencesCompat.apply(editor);
    }

    /**
     * 查询某个key是否已经存在
     *
     * @param context
     * @param key
     * @return
     */
    public static boolean contains(Context context, String key) {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        return sp.contains(key);
    }

    /**
     * 返回所有的键值对
     *
     * @param context
     * @return
     */
    public static Map<String, ?> getAll(Context context) {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        return sp.getAll();
    }


    /**
     * 创建一个解决SharedPreferencesCompat.apply方法的一个兼容类
     *
     * @author zhy
     */
    private static class SharedPreferencesCompat {
        private static final Method sApplyMethod = findApplyMethod();

        /**
         * 反射查找apply的方法
         *
         * @return
         */
        @SuppressWarnings({"unchecked", "rawtypes"})
        private static Method findApplyMethod() {
            try {
                Class clz = SharedPreferences.Editor.class;
                return clz.getMethod("apply");
            } catch (NoSuchMethodException e) {
            }
            return null;
        }

        /**
         * 如果找到则使用apply执行，否则使用commit
         *
         * @param editor
         */
        public static void apply(SharedPreferences.Editor editor) {
            try {
                if (sApplyMethod != null) {
                    sApplyMethod.invoke(editor);
                    return;
                }
            } catch (IllegalArgumentException e) {
            } catch (IllegalAccessException e) {
            } catch (InvocationTargetException e) {
            }
            editor.commit();
        }
    }

    /**
     * 存储用户登录的token
     * @param token
     */
    public static void saveLoginToken(Context context,String token){
        put(context, StateConsts.LOGIN_TOKEN,token);
    }
    /**
     * 获取用户登录的token
     */
    public static  String getLoginToken(Context context){
        return (String) get(context,StateConsts.LOGIN_TOKEN,"");
    }

    /**
     * 是否首次打开app
     */
    public static boolean isFirstOpenApp(Context context) {
        return (boolean) get(context,"firstOpenApp",true);
    }

    public static void saveFirstOpenApp(Context context) {
        put(context,"firstOpenApp", false);
    }

}
